ok i am a noob to rc planes, i been playing with the trucks for a long time now, i thought i needed some air, so i been looking at the hobbico superstar EP select, RTF

http://www2.towerhobbies.com/cgi-bin...I=LXAWF5**&P=7

first question what are ailerons?? do i really need then,i am just a begginer
how is the stock radio system, its an FM, does it need any upgrading,

and how can i get longer runtime, the rcuniverse review siad the flight time was around 5 mins, they used some new batteries and got it to 7 or something but thoose are not avaliable any more at tower hobbies, can u guys give me an option?? and also a charger